一种和田玉仿制品——含氟的硅碱钙石微晶化玻璃的初步研究

针对市场上出现的一种外观酷似和田玉的微晶化玻璃,利用常规宝石学测试手段、扫描电镜分析、X射线粉末衍射分析以及红外光谱分析等测试方法,对该材料样品的宝石学特征、表面微观形貌特征、光谱学特征等进行了研究。结果显示,样品为一种含氟的硅碱钙石微晶化玻璃,它是由以二氧化硅为主要成分的基础玻璃在特定的温度条件下逐渐析晶而成的,其微观结构与和田玉的有一定的差异,可以通过红外光谱和XRD对其进行结论性鉴定与区别。

A preliminary study of fluorine-bearing canasite microcrystalline glass, a kind of imitation nephrite

The conventional gemmological methods, scanning electron microscopy, X-ray powder diffraction and infrared spectrometer analysis were used to investigate samples of imitation nephrite sold recently on the market and to analyze their gemological, mineralogical, spectral and surficial characteristics. The results show that the imitation nephrite material is fluorine-bearing canasite microcrystalline glass, a product of gradual crystallization of the main components of silica-based glass under the specific temperature conditions. Infrared spectrometer and XRD can be used to effectively identify fluorine-bearing canasite microcrystalline glass.